I think Taylor looks underdressed. Her dress looks like it comes from one of those sites that pop up on the side of my computer.
Katie's dress is beautiful, (I dont' know who she is). I hope she's not overdressed for the occasion?
I have no idea what I would wear to a wedding nowadays. The last wedding we were invited to was at a park and outdoors, which was taking a chance for August. No tents.
I didn't go, but looking at the pics, it ranged from cargo shorts to dresses like Kloss wore. Maybe there isn't a dress code scale anymore.